Gutter downspout extension



FIG. 1 is a front perspective view of a gutter downspout extension, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view thereof in an assembled state.

The broken lines depict portions of the gutter downspout extension that form no part of the claim. 

CLAIM The ornamental design for a gutter downspout extension, as shown and described. 